Electrically-operated riveting, pressing, stamping, and the like machine.



E. ADAMSON.

ELECTRICA LLY OPERATED RIVETING, PRESSING, STAMPING, AND THE LIKE MACHINE. APPLICATION FILED JUNE 22. 191B.

'1 ,290,86 1 Patented Jan. 14, 1-919.

3 suns-sun f.

' E. ADAMSON. ELEGTRICALLY OPERATED RIVETING, PRESSING, STAMPING, AND THE LIKE MACHINE.

APPLICATION FILED JUNE 22. I918.

Patented Jan. 14, 1919.

3 SHEETS-SHEET 2- E. ADAMSON.

4 ELECTRICALLY OPERATED RIVETING, PRESSING, STAMPING, AND THE LIKE MACHINE.

APPLICATION FILED JUNE 22- I918.

Patented Jan. 14,1919.

3 SHEETSSHEET 3- EDWARD ADAMSON, OF WATERLOO, LIVERPOOL, ENGLAND.

ELECTRICALLY-OPERATED RIVE'IING, PRES SING, STAMPING, AND THE LIKE FIAGHINE.

Application filed June 22, 1918.

To all whom it may concern:

Be it known that I, EDWARD ADAMSON, of 10 Victoria road, Waterloo, Liverpool, 3, subject of the King of Great Britain, and a resident of Waterloo, Liverpool, England, have invented certain new and useful Improvements in Electrically-Operated Riveting, Pressing, Stamping, and the like Machines, of which the following is a specification.

This invention relates to an improved electrically operated type of riveting, stamping, pressin or the like machine, whereby a more ecient action may be obtained than with existing electrically 0perated machines of this description. The invention is particularly applicable to the portable type of riveting machines and is directed to that class of electrically operated rollers.

machine in which the action of riveting or pressing is effected by means of a solenoid.

According to this invention the movable jaw, ram or thelike of the riveting, stamping, or other machine, is operated from an electrically energized solenoid or solenoids, the solenoid being of the electro-magnetic type, and the movable core or cores being made conical, conoidal, or of analogous shape so as to form a projection which is adapted to enter a complementarily shaped recess formed in a magnetic pole piece inclosing the end of the solenoid. The movable core or cores is or are articulated-through suitable gearing to the movable jaw or the like, any desired mechanical advantage being thus secured. In one suitable arrangement the movable core is anchored to a series of rollers, say, three, the axes of which are at right angles to the direction of the pull of the core, these three rollers being triangularly disposed so that the top roller rests upon and rolls in contact with the two lower This nest of three rollers, when the solenoid is energized, acts upon the oblique face of a lever, the other end of which operates the movable jaw or the like, the two lower rollers rolling upon a thrust face on the machine and the upper roller engaging the oblique face of the lever end. The peripheral movements of the several rollers, as the pull develops, thus gives a wedging and rolling action in the required direction.

A riveting machine in accordance with this invention is shown in the accompanying drawings in which Figure 1-'. is a side view Specification of Letters Patent.

Patented Jan. 14, 1919.

Serial No. 241,399.

of the machine, the lower part, of the bow frame being broken away. Fig. 2. is a vertical section through the solenoid and. operating gear, and Fig. 3, a plan of Fig. 2. Figs. 4 and 5 are a fragmentary side view and cross section on line A' A of the preferred construction of ram for a punching machine.

The movable jaw or ram 1 of the riveter Figs. 1, 2, and 3 is guided in a boss 2 in the upper arm of a bow frame 3, the boss 4 in the lower arm being fitted with an adjustable swage 5 or the like carried in any known manner. Mounted upon the upper arm, or in any other suitable position on the framework, is a solenoid 6 of suitable capac ity, the armature core 7 of which is guided to slide axially in the solenoid winding 8, and one end of which 9 is formed conical, conoidal, or with a projection adapted to enter a complementarily shaped recess 10 in the pole piece 11 closing the end of the solenoid winding. The movable core piece 7 is connected to three rollers 12, 13, -14, nested together triangularly and rolling in contact, the two lower "rollers 13, 14, rolling along a fiat thrust face 15 on the machine, and the upper roller 12 hearing against an inclined face 16 on a lever 17 pivoted at 18, the other end 19 of which lever is coupled to the jaw 1, ram, or the like of the machine. In this way as the core of the solenoid is drawn in, the end 16 of the lever 17 is forced up and the movable jaw or ram of the machine operated. By varying the obliquity of the inclined face 16 and the length of the lever arm any desired force may be set up on the movable jaw or ram.

The solenoid casing is bolted to the top of the bow frame on a bracket 20, and the pull rod 21 of the movable core 7 is screwed into a yoke 22 connected to side cheek plates 23 in which the rollers 12, 13 and 14 are journaled. A slot 25 is formed in the end 19 of the lever 17 engaging a pin 24 by means of which the lever 17 and jaw 1 are connected, the jaw after operation being raised by a spring 2*, the downward thrust during the action of riveting being taken by the curved undersurface 26 of the end 19 engaging a corresponding recess in the top of the jaw 1. Recoil springs 27 are provided for returning the movable core 7 after operation.

Thepullingv action ofa solenoidis such that there is an increasing intensity of the pull on the core as the latter more fully enters the solenoid winding, and in this way the riveting pressure will increase toward the terminal point of the downward stroke of the rain, which action is of particular advantage in the operation of riveting.

On the other hand in a punching machine Figs. 4 and 5 the greatest pressure is rei the lever 1 7 quired to be exerted at the initial part of the stroke, and in order to provide for this the lever 17 is not positively connected to the ram 1 but is pivotally coupled at 27 to a head 28 which is slidable in guides 29. The ram 1 is carried from a similar guided sliding element 30 and a compression spring 31 housed in recesses in the elements 28 and 30 is adapted to take the thrust from the lever 17. The slidable elements 28, 30, are ar ranged to be separated when at the top of their stroke by a certain distance shown at 32. When therefore, pressure is exerted on and upper slide elements 28, the latter will be exerting pressure through the spring 31 on to the lower slide 30 until the ram 1 comes in contact with the work. The slide 28 .will then close down on to the slide 30 and the punch 1 be forced positively into the metal. As the metal shears and the resistance decreases the resiliency of the spring 31 will complete the stroke of the punch 1?.

Any suitable type of switch may be provided for controlling the supply of current to the solenoid winding.

I claim.

1. In an electrically operated riveting, pressing or stamping machine, a solenoid, a roller or series of rollers connected to the core of the solenoid, a lever connected to and actuating the movable jaw or the like of the machine, means for pivotally supporting the lever intermediate its length, said lever having operative relation to the core carried rollers whereby movement of the core is communicated to the lever.

2. In an electrically operated riveting, pressing or stamping machine, a solenoid, a roller or series of rollers connected to the core of the solenoid, a lever pivoted intermediate its length, means for connecting one end of the lever to the movable jaw or the like of the machine, and means for guiding the core carried rollers into engagement with the lever whereby the said lever isoscillated.

3. In an electrically operated riveting, pressing, or stamping machine, a solenoid, a roller or series of rollers connected to the core of the solenoid, a lever co-acting I With and operated by the rollers, and an inclined face on the lever engaged by the rollers, said lever actuating the movable jaw or the like of the machine.

4. In an electrically operated riveting, pressing, or stamping machine, a solenoid, a series of rollers nested together and connected to the solenoid core, a lever co-acting with and operated by the rollers, and an inclined face on the lever with which the rollers coact, said lever actuating the movable jaw or the like of the machine.

5. In an electrically operated riveting, pressing, or stamping machine, a, solenoid, three rollers nested together triangularly and connected to the solenoid core, a fixed thrust face on the machine on which the rollers ride, a movable jaw, a lever co-acting with and operated by the rollers, and an inclined face on the lever engaged by the rollers, said lever actuating the movable j 34W or the like of the machine.

6. In an electrically operated riveting, pressing, or stamping machine, a solenoid, cheek plates connected to the solenoid core, three rollers nested together triangularly and journaled in the cheek plates, a fixed thrust face on the machine on which the rollers ride, a movable jaw, a lever co-acting with and operated by the rollers, and an inclined face on the lever engaged by the rollers, said lever actuating the movable j aw or the like of the machine.

7. In an electrically operated riveting, pressing, or stamping machine, a solenoid, a

, roller or series of rollers connected to the core of the solenoid, a lever co-acting with and operated by the rollers, a movable jaw actuated by the lever, and a compression spring interposed between the lever and the movable jaw through which spring the effort of the lever may be directed to the jaw.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWARD ADAMSON.

Witnesses:

A. J. DAVIES, E. HEGINBQTHAM. 

